ASTM B272-12(2019)
(Specification)Standard Specification for Copper Flat Products with Finished (Rolled or Drawn) Edges (Flat Wire and Strip)
Standard Specification for Copper Flat Products with Finished (Rolled or Drawn) Edges (Flat Wire and Strip)
ABSTRACT
This specification establishes the requirements for flat copper wire and strip products, with rolled or drawn finished edges produced for general applications. Unless otherwise established by agreement between the manufacturer and purchaser, products shall be produced in UNS Copper Nos. C10100, C10200, C10300, C10500, C10700, C10800, C11000, C11040, C12200, and C14200. The material for manufacture shall be a billet, cake, wire bar, or rod suitable for processing by hot working, cold working, and annealing to produce a uniform wrought structure in the finished product. Products shall be produced in the annealed (O61) and cold worked (H00, H01, H02, H03, H04, H06, and H08) tempers. Products shall be tested and shall adhere to dimensional (thickness, width, length, straightness, and edge contour), mechanical (tensile strength, elongation, Rockwell hardness, bend angle, and hydrogen embrittlement susceptibility), electrical resisitvity, and chemical composition requirements.
SCOPE
1.1 This specification establishes the requirements for copper products, flat wire and strip, with rolled or drawn finished edges produced for general application.
1.1.1 The product is produced in UNS Copper Nos. C10100, C10200, C10300, C10500, C10700, C10800, C11000, C11040, C12200, and C14200 unless otherwise established by agreement between manufacturer and purchaser.
1.2 Units—The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units, which are provided for information only and are not considered standard.
Note 1: When a copper other than that listed in 1.1.1 is designated by the purchaser, the resulting product shall conform to the physical, mechanical, performance, dimensional, and tolerance requirements per agreement between the manufacturer and purchaser.
1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
General Information
Relations
Standards Content (Sample)
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation:B272 −12 (Reapproved 2019)
Standard Specification for
Copper Flat Products with Finished (Rolled or Drawn)
Edges (Flat Wire and Strip)
This standard is issued under the fixed designation B272; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope* Copper and Copper-Alloy Plate, Sheet, Strip, and Rolled
Bar
1.1 This specification establishes the requirements for cop-
B250/B250M Specification for General Requirements for
per products, flat wire and strip, with rolled or drawn finished
Wrought Copper Alloy Wire
edges produced for general application.
B577 Test Methods for Detection of Cuprous Oxide (Hydro-
1.1.1 The product is produced in UNS Copper Nos.
gen Embrittlement Susceptibility) in Copper
C10100,C10200,C10300,C10500,C10700,C10800,C11000,
B846 Terminology for Copper and Copper Alloys
C11040, C12200, and C14200 unless otherwise established by
B950 Guide for Editorial Procedures and Form of Product
agreement between manufacturer and purchaser.
Specifications for Copper and Copper Alloys
1.2 Units—The values stated in inch-pound units are to be
E8/E8M Test Methods for Tension Testing of Metallic Ma-
regarded as standard. The values given in parentheses are
terials
mathematical conversions to SI units, which are provided for
E18 Test Methods for Rockwell Hardness of Metallic Ma-
information only and are not considered standard.
terials
NOTE 1—When a copper other than that listed in 1.1.1 is designated by
E53 Test Method for Determination of Copper in Unalloyed
the purchaser, the resulting product shall conform to the physical,
Copper by Gravimetry
mechanical, performance, dimensional, and tolerance requirements per
E62 Test Methods for Chemical Analysis of Copper and
agreement between the manufacturer and purchaser.
CopperAlloys (Photometric Methods) (Withdrawn 2010)
1.3 This international standard was developed in accor-
E290 Test Methods for Bend Testing of Material for Ductil-
dance with internationally recognized principles on standard-
ity
ization established in the Decision on Principles for the
E478 Test Methods for ChemicalAnalysis of CopperAlloys
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
3. General Requirements
Barriers to Trade (TBT) Committee.
3.1 The following sections of Specification B248 constitute
2. Referenced Documents a part of this specification for strip products and of Specifica-
2 tion B250/B250M for flat wire products:
2.1 ASTM Standards:
3.1.1 Terminology;
B49 Specification for Copper Rod for Electrical Purposes
3.1.2 Materials and Manufacture;
B170 Specification for Oxygen-Free Electrolytic Copper—
3.1.3 Workmanship, Finish, and Appearance;
Refinery Shapes
3.1.4 Sampling;
B193 Test Method for Resistivity of Electrical Conductor
3.1.5 Number of Tests and Retests;
Materials
3.1.6 Specimen Preparation;
B248 Specification for General Requirements for Wrought
3.1.7 Test Methods;
3.1.8 Significance of Numerical Limits;
3.1.9 Inspection;
ThisspecificationisunderthejurisdictionofASTMCommitteeB05onCopper
3.1.10 Rejection and Rehearing;
and CopperAlloys and is the direct responsibility of Subcommittee B05.02 on Rod,
Bar, Wire, Shapes and Forgings. 3.1.11 Certification;
Current edition approved April 1, 2019. Published April 2019. Originally
3.1.12 Test Reports;
approved in 1952. Last previous edition approved in 2012 as B272–12. DOI:
3.1.13 Packaging and Package Marking; and
10.1520/B0272–12R19.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on The last approved version of this historical standard is referenced on
the ASTM website. www.astm.org.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
B272−12 (2019)
3.1.14 Supplementary Requirements. 6.1.1 The material of manufacture shall be a copper billet,
cake, wire bar or rod of such purity and soundness as to be
3.2 In addition, when a section with a title identical to that
suitable for processing into the products to the product speci-
referenced in 3.1 appears in this specification, it contains
fication listed in Section 1.
additional requirements that supplement those appearing in
6.1.2 Copper other than that listed in 1.1.1 is permitted only
Specification B248 or Specification B250/B250M, or both.
upon agreement between the manufacturer and the purchaser
(see Note 1).
4. Terminology
6.1.3 When specified in the contract or purchase order, that
4.1 For definitions of terms related to copper and copper
heat identification or traceability is required, the purchaser
alloys, refer to Terminology B846.
shall specify the details desired.
6.2 Manufacture:
5. Ordering Information
6.2.1 The product shall be manufactured by such hot
5.1 Include the following specified choices when placing
working, cold working, and annealing processes as to produce
orders for product under this specification, as applicable:
a uniform wrought structure in the finished product.
5.1.1 ASTM designation and year of issue;
6.3 Edges—The edges shall be finished by rolling or draw-
5.1.2 Copper UNS No. designation (Section 1);
ing per 13.6.
5.1.3 Temper—O61 (annealed), H00 (eight hard), H01
(quarter hard), H02 (half hard), H03 (three-quarter hard), H04
7. Chemical Composition
(hard), H06 (extra hard), H08 (spring) (Section 8);
5.1.4 Dimensions—Width and thickness (Section 13);
7.1 The material shall conform to the chemical composition
5.1.5 Quantity—Total weight, footage, or number of pieces;
requirements in Table 1 for the copper UNS No. designation
5.1.6 How Furnished—Lengths, coils, spools, and so forth,
specified in the ordering information.
(see sections 13.4.1 and 13.4.3 for clarification);
7.1.1 These composition limits do not preclude the presence
5.1.7 Intended application; and
of other elements. When required, limits shall be established
5.1.8 Edge contours required, (see 13.6).
and analysis required for unnamed elements by agreement
between the manufacturer and the purchaser.
5.2 The following options are available but may not be
included unless specified at the time of placing of the order,
8. Temper
when required:
5.2.1 Electrical resistivity (Section 9); 8.1 The standard tempers for products described in this
5.2.2 Hydrogen embrittlement susceptibility test (Section specification are given in Table 2.
11); 8.1.1 Annealed temper O61.
5.2.3 Bend test (Section 11); 8.1.2 ColdworkedtempersH00,H01,H02,H03,H04,H06,
5.2.4 Certification (Specification B248 or Specification and H08.
B250/B250M, or both);
9. Physical Property Requirement
5.2.5 Mill test reports (Specification B248 or Specification
B250/B250M, or both);
9.1 Electrical Resistivity Requirement:
5.2.6 If product is purchased for agencies of the U.S.
9.1.1 When specified in contract or purchase order (see
Government (Section 12); and
Section 5) Copper UNS No. C10100, C10200, C10300,
5.2.7 Heat identification or traceability details.
C11000, C11040, C10500, and C10700 shall conform to the
electrical mass resistivity requirements in Table 2, when tested
6. Material and Manufacture
in accordance with Test Method B193. When Electrical Resis-
6.1 Material: tivity testing is specified for other copper alloys the acceptance
TABLE 1 Chemical Requirements
Composition, %
Copper UNS No.
A B C
Element C10100 C10200 C10300 C10500 C10700 C10800 C11000 C11040 C12200 C14200
D E E
Copper (incl silver), min 99.99 99.95 99.95 99.95 99.95 99.95 99.90 99.90 99.9 99.4
Phosphorus . . . . . . 0.001–0.005 . . . . . . 0.005–0.012 . . . . . . 0.015–0.040 0.015–0.040
C
Arsenic . . . . . . . . . . . . . . . . . . . . . . . . 0.15–0.50
C
Silver, min . . . 0.034 0.085 . . . .
C
Oxygen, max 0.0005 0.0010 . . . 0.0010 0.0010 . . . . . . . .
A
Refer to Table 1, Chemical Requirements, Grade 1 of Specification B170 for impurity limits for Copper UNS No. C10100.
B
Refer to Table 1, Chemical Requirements, Grade 2 of Specification B170 for impurity limits for Copper UNS No. C10200.
C
The following additional maximum limits shall apply: Se, 2 ppm (0.0002 %); Bi, 1.0 ppm (0.00010 %); Te, 2 ppm (0.0002 %); Group Total, Te + Se + Bi,
3 ppm (0.0003 %). Sn, 5 ppm (0.0005 %); Pb, 5 ppm (0.0005 %); Fe, 10 ppm (0.0010 %); Ni, 10 ppm (0.0010 %); S, 15 ppm (0.0015 %); Ag, 25 ppm (0.0025 %);
Sb, 4 ppm (0.0004 %); As, 5 ppm (0.0005 %); Oxygen 100 to 650 ppm (0.010 to 0.065 %). The total maximum allowable of 65 ppm (0.065 %) does not include oxygen.
D
The copper value is determined by the difference between the impurity total and 100 %. The copper value is exclusive of Ag.
E
Includes P.
B272−12 (2019)
TABLE 2 Mechanical (All Alloys) and Electrical Requirements (Conductor Alloys Only)
Rockwell Tensile Elongation Bend Electrical Resistivity, max,
F Scale ksi (MPa) Min in Angle, Ω·g/m at 20 °C (68 °F)
Temper Thickness, in. (mm)
2 degree
in %
Standard Name Min Max C10100 C10300 C10200, C11000,
C11040, C10500,
C10700
O61 annealed up to 0.010 (0.254), incl . . . 20 180 0.151 76 0.156 14 0.153 28
over 0.010 (0.0254) to 0.035 . . 40 25 180 0.151 76 0.156 14 0.153 28
(0.900), incl 65 max . (275) 25 180 0.151 76 0.156 14 0.153 28
over 0.035 (0.900) to 0.050 65 max . 38 25 180 0.151 76 0.156 14 0.153 28
(1.25), incl (260)
over 0.050 (1.25) to 0.188 37
(4.80), incl (255)
H00 ⁄8 hard up to 0.035 (0.900), incl . 32 (220) 40 18 120 0.156 14 0.159 40 0.157 75
over 0.035 (0.900) to 0.188 54–82 32 (220) (275) 20 120 0.156 14 0.159 40 0.157 75
(4.80), incl 40
(275)
H01 ⁄4 hard up to 0.035 (0.900), incl . 34 (235) 42 15 120 0.156 14 0.159 40 0.157 75
over 0.035 (0.900) to 0.188 60–86 34 (235) (290) 15 120 0.156 14 0.159 40 0.157 75
(4.80), incl 42
(290)
H02 ⁄2 hard up to 0.035 (0.900), incl . 37 (255) 46 10 120 0.156 14 0.159 40 0.157 75
over 0.035 (3.20) to 0.188 77–91 37 (255) (315) 10 120 0.156 14 0.159 40 0.157 75
(4.80), incl 46
(315)
H03 ⁄4 hard up to 0.035 (0.900), incl . 41 (280) 50 6 120 0.156 14 0.159 40 0.157 75
over 0.035 (3.20) to 0.188 82–94 41 (280) (345) 6 120 0.156 14 0.159 40 0.157 75
(4.80), incl 50
(345)
H04 hard up to 0.035 (0.900), incl . 43 (295) 58 4 120 0.156 14 0.159 40 0.157 75
over 0.035 (0.900) to 0.125 85–97 43 (295) (400) 4 120 0.156 14 0.159 40 0.157 75
(3.20), incl 80–95 43 (295) . 4 120 0.156 14 0.159 40 0.157 75
over 0.125 (3.20) to 0.188 .
(4.80), incl
H06 extra up to 0.035 (0.900), incl . 47 (325) 56 . . 0.156 14 0.159 40 0.157 75
hard over 0.035 (3.20) to 0.188 88–97 47 (325) (385) . . 0.156 14 0.159 40 0.157 75
(4.80), incl 56
(385)
H08 spring up to 0.035 (0.900), incl . 50 (345) 58 . . 0.156 14 0.159 40 0.157 75
over 0.035 (3.20) to 0.188 91–98 50 (345) (400) . . 0.156 14 0.159 40 0.157 75
(4.80), incl 58
(400)
requirements shall be established by agreement between the 10.2 Rockwell Hardness:
manufacturer and the purchaser. 10.2.1 Product over 0.035 in. (0.90 mm) in thickness shall
conform to the hardness requirements prescribed in Table 2
NOTE 2—The International Annealed Copper Standard electrical con-
when tested in accordance with Test Methods E18.
ductivity equivalents are as follows:
10.2.1.1 Rockwell hardness test results shall be the basis for
Electrical Resistivity, Conductivity,
acceptance or rejection for mechanical properties for product
Ω·g/m %
over 0.035 in. (0.90 mm) in thickness.
0.151 76 101.00
0.153 28 100.00
11. Performance Requirements
0.156 14 98.16
0.157 75 97.16
11.1 Hydrogen Embrittlement Susceptibility:
0.159 40 96.16
11.1.1 Samples of finished flat wire and strip of Copper
10. Mechanical Property Requirements UNS Nos. C10100, C10200, C10300, C10500, C10700,
C10800, C12200, and C14200 shall be capable of passing the
10.1 Tensile Requirements:
embrittlement test of Procedure B of Test Methods B577. The
10.1.1 Product 0.035 in. (0.90 mm) and under in thickness
actual performance of this test is not mandatory under the
shall conform to the tensile strength and elongation require-
terms of this specification unless definitely specified in the
ments prescribed in Table 2, when tested in accordance with
ordering information (see Section 5).
Test Methods E8/E8M.
11.1.2 In case of dispute, Test Method C of Test Methods
10.1.1.1 Tensile strength test results shall be the basis for
B577 shall be used.
acceptance or rejection for mechanical properties for product
0.035 in. (0.90 mm) and under in thickness. 11.2 Bend Test Requirement:
10.1.2 Product over 0.035 in. (0.90 mm) in thickness shall 11.2.1 When specified in contract or purchase order and
conform to the requirements prescribed in Table 2 when tested tested in accordance with Test Methods E290, the specimen
in accordance with Test Methods E8/E8M. shall withstand being bent cold (room temperature) on a radius
B272−12 (2019)
TABLE 3 Thickness Tolerances
A
Thickness Tolerances, Plus and Minus, in. (mm), for Widths Given in Inches (Millimetres)
Thickness, in. (mm) 1 1
Up to 1 ⁄4 Over 1 ⁄4 (31.8) to Over 2.00 (50.8) Over 4.00 (102) Over 8.00 (203) to
(31.8), incl 2.00 (50.8), incl to 4.00 (102), incl to 8.00 (203), incl 12.00 (305), incl
0.013 (0.330), incl 0.001 (0.025) . . . .
Over 0.013 (0.330) to 0.050 (1.27), incl 0.0013 (0.033) 0.0015 (0.038) . . .
Over 0.050 (1.27) to 0.090 (2.29), incl 0.0015 (0.038) 0.002 (0.051) 0.0025 (0.064) . .
Over 0.090 (2.29) to 0.130 (3.30), incl 0.002 (0.051) 0.0025 (0.064) 0.003 (0.076) 0.0035 (0.089) .
Over 0.130 (3.30) to 0.188 (4.78), incl 0.003 (0.076) 0.003 (0.076) 0.0035 (0.089) 0.004 (0.10) 0.005 (0.13)
A
If tolerances all plus or all minus are desired, double the values given.
equal to the minimum cross sectional dimension to the angle 13.4.1 Straight lengths shall be furnished in stock lengths
prescribed in Table 2.The bend shall be radial to this minimum with ends included, in accordance with the schedule shown in
dimension and after bending, no fracture shall be visible to the Table 5, unless the order specifies stock lengths only, specific
unaided eye on the
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